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Faster Testing for Targeted Chemotherapy Effect Against Liver Cancer

By MedImaging International staff writers
Posted on 12 Jul 2012
Recent studies on US men and women with potentially deadly liver or pancreatic cancers showed that new magnetic resonance imaging (MRI) techniques can reveal within one month whether highly toxic chemotherapy is working and killing tumor cells long before tumors actually shrink--or fail to shrink.

Using special software and MRI scanners, imaging specialists developed their new assay, known as a volumetric functional MRI scan, by exploiting the physiologic differences in water movement and absorption inside cancer cells that are dying and those that are not.

The studies are believed to be the first to show that the diagnostic imaging procedure buys patients many months to well over a year of life, by figuring out who might benefit from repeat or higher-dose chemotherapy. The paired scans, which take only minutes to perform, can detect the movement of water molecules inside tumor cells; and software performs the mathematical analysis needed to calculate the imaged tumor cells’ so-called apparent diffusion coefficient. Living tumor cells showing a low coefficient, as water absorption in and out of the cells is tightly controlled, and dying cells--the objective of chemotherapy--have a comparatively high coefficient, because the tumor cells’ membranes have lost the ability to restrict water movement. The software used in the scans was developed at Johns Hopkins University (Baltimore, MD, USA) and at Siemens Healthcare (Erlangen, Germany), which developed the scanners.

“Our latest volumetric functional MRI scans could help people with aggressive cancers, and little time to spare on failed treatments, know as quickly as possible if their treatment is working, and when they need to consider other treatment options, and without having to wait for months to actually see tumor shrinkage,” stated study senior investigator and radiologist, Ihab Kamel, MD, PhD.

Findings from the first of two studies to be published in the same July 1, 2012, issue of the journal Radiology revealed that the highly accurate, three-dimensional (3D) images taken shortly before and one month after a form of chemotherapy called transcatheter arterial chemoembolization, could assess the treatment’s impact against a rare and advanced form of liver bile duct cancer, known as cholangiocarcinoma. The study involved 29 men and women aged 29 to 82, all undergoing treatment at the Johns Hopkins Hospital.

Among the key findings in the first study was that 22 people, whose functional MRI scans showed increases in apparent diffusion coefficient scores of over 45%, lived at least 10 months longer, while some 17 with coefficient score increases over 60%, lived at least 17 months longer.

Dr. Kamel, an associate professor at the Johns Hopkins University School of Medicine and its Russell H. Morgan department of radiology, reported that cholangiocarcinoma is frequently detected at such an advanced stage that patients only have on average six months to live. “By the time our patients become jaundiced, start turning yellow from bile buildup and seek medical help, it’s almost too late,” he said. “They have no time to waste on failed treatments.”

The second study, also at Johns Hopkins, examined the scans on 26 men and women, ages 37 to 79, with islet cell carcinoma, a well-known pancreatic cancer. Researchers analyzed some 215 tumorous lesions in these people, scanning shortly before and one month after the same initial treatment for their cancer. According to Dr. Kamel, physicians have more treatment alternatives with islet cell carcinoma and can shift people from chemoembolization to chemotherapy with either drug Sunitinib or Everolimus.

Results in the second study showed that for 78 tumors, which responded well to chemotherapy, functional MRI scans produced apparent diffusion coefficient score increases averaging at least 70%, whereas in the 137 tumors for which treatment was not a success, increases in coefficient measures averaged less than 40%. Treatment was considered successful if tumor shrinkage continued for at least six months.

“Our analysis shows how to clearly define and demarcate between patients whose tumors are responding to treatment and those who are not,” said Dr. Kamel. This is very important, he adds, because in islet cell carcinoma, some patients’ cancer symptoms, such as headaches, ulcers, pain, and diarrhea, can be masked by the liver’s hormone production. The disappearance or absence of symptoms is not an effective indicator of treatment success.

Larger studies already planned will gauge how well the apparent diffusion coefficients for each kind of combination chemotherapy forecast survival and how much time remains to switch treatment plans.

In transcatheter arterial chemoembolization, interventional radiologists thread an ultrathin catheter through an abdominal artery directly to the main arteries feeding the liver tumor. Drug-eluting beads are delivered to and released directly inside the tumor to destroy it by cutting off its blood supply. The roughly half-hour procedure carries a slight risk of bleeding or damage to the blood vessels, while the toxic drug treatment can permanently damage otherwise healthy liver tissue. Most patients are discharged from the hospital within a day, and many are able to resume physical activity and work.

The Cholangiocarcinoma Foundation estimates that some 2,500 people are newly diagnosed each year with the bile duct cancer, most in the moderate to advanced stages of disease. Studies have estimated that islet cell carcinomas account for at least 1.3% of the 44,000 new cases of pancreatic cancer in the United States each year.

Related Links:

Johns Hopkins University
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86 (30.994415283203): SELECT show_live FROM jos_com_show_setting LIMIT 1
87 (47.922134399414): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294741566 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
88 (31.948089599609): SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294741566 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
89 (37.908554077148): SELECT id,name,title FROM jos_deeppockets WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id != 294743300 AND id != 294743301 AND id != 294743302 AND id != 294743303 AND id != 294743304 AND id != 294743305 AND id != 294743306 AND id != 294743307 AND id != 294743308 AND id != 294743309 AND id != 294743310 AND metakey != 'aacc' ORDER BY `ordering`
90 (55.074691772461): SELECT show_live FROM jos_com_show_setting LIMIT 1
91 (42.915344238281): SELECT show_live FROM jos_com_show_setting LIMIT 1
92 (38.14697265625): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (37.193298339844): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (51.975250244141): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (43.869018554688): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (30.040740966797): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (33.140182495117): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (113.01040649414): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
105 (51.975250244141): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
106 (56.982040405273): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294741566 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
107 (51.975250244141): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294741566 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
108 (85.830688476562): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
109 (52.928924560547): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
110 (77.962875366211): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294741566 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (622.98774719238): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294741566 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (771.99935913086): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
113 (555.03845214844): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
114 (153.0647277832): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
115 (51.975250244141): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
116 (69.141387939453): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
117 (45.061111450195): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
118 (55.074691772461): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
119 (41.007995605469): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
120 (52.928924560547): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
121 (58.889389038086): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
122 (501.87110900879): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
123 (!!!!! 24276.971817017): SELECT * FROM jos_deeppockets WHERE jos_deeppockets.cat = 10 AND jos_deeppockets.type = 'deeppockets_item' AND jos_deeppockets.published = 1 AND jos_deeppockets.created + INTERVAL 14 DAY >= NOW() ORDER BY jos_deeppockets.hits DESC LIMIT 7
124 (593.90068054199): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294741566 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294741566 AND type='deeppockets_item' AND published='1' LIMIT 1
125 (!!!!! 8239.0308380127): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
126 (195.98007202148): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
127 (139.95170593262): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
128 (44.107437133789): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
129 (47.922134399414): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
130 (31.948089599609): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
131 (356.19735717773): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
132 (74.148178100586): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
133 (33.855438232422): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
134 (30.040740966797): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
135 (700.95062255859): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
136 (474.92980957031): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
137 (263.21411132812): SELECT name FROM jos_deeppockets WHERE id=212
138 (43.869018554688): SELECT name FROM jos_deeppockets WHERE id=212
139 (681.87713623047): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
140 (691.89071655273): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
141 (87.02278137207): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
142 (50.067901611328): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
143 (!!!!! 13446.092605591): TRUNCATE TABLE jos_trademed_module
144 (461.10153198242): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294741566 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
145 (115.87142944336): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294741566 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
146 (542.16384887695): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
147 (145.91217041016): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
148 (468.96934509277): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
149 (88.930130004883): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
150 (!!!!! 1810.0738525391): SELECT jos_item.* FROM jos_item INNER JOIN jos_number ON jos_item.numberID=jos_number.id WHERE 1=1 AND (jos_item.imgMini<>'') AND jos_item.type='L' AND jos_item.numberID= ( SELECT jos_number.id FROM jos_number WHERE jos_number.journalID IN (10) and jos_number.id in (select distinct jos_number.id from jos_number join jos_item on jos_item.numberid=jos_number.id where jos_item.type='P') ORDER BY (CONVERT(SUBSTRING(issue,1,2),SIGNED) + (CONVERT(SUBSTRING(issue,3,2),SIGNED)*100)) DESC LIMIT 0,1 ) ORDER BY RAND() DESC LIMIT 6
151 (123.02398681641): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
152 (89.168548583984): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
153 (73.19450378418): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294741566 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294741566 AND type='deeppockets_item' AND published='1' LIMIT 1
154 (99.18212890625): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
155 (50.783157348633): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
156 (61.988830566406): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
157 (230.07392883301): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
158 (106.0962677002): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294741566 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294741566 AND published='1' LIMIT 1
159 (80.82389831543): select jos_twitters.link from jos_twitters where cat=10
160 (50.067901611328): select jos_facebook.link from jos_facebook where cat=10
161 (55.074691772461): select jos_google_plus.link from jos_google_plus where cat=10
162 (98.943710327148): select jos_linkedin.link from jos_linkedin where cat=10