Abstract:
PURPOSE:The purpose of this study was to compare the preoperative detectability of hepatocellular carcinomas (HCCs) using combined T2-weighted and dynamic gadolinium-enhanced MRI and combined CT during arterial portography (CTAP) and CT hepatic arteriography (CTHA). METHOD:Thirty-three patients with 43 HCCs underwent T2-weighted and dynamic gadolinium-enhanced MRI and combined CTAP and CTHA. The diagnosis was established by pathologic examination following surgical resection in 26 patients and by biopsy in 7 patients. The MR protocol included fast SE with two TEs (including T2-weighted imaging) and precontrast and gadolinium-enhanced T1-weighted fast multiplanar spoiled gradient-recalled echo images with dynamic study. The MR images of all sequences and the paired CTAP and CTHA images were independently reviewed by three radiologists. Image review was conducted on a segment-by-segment basis. Diagnostic accuracy was evaluated with receiver operating characteristic analysis. RESULTS:The accuracies (Az values) of MRI of all sequences and combined CTAP and CTHA for all observers were 0.960 and 0.959, respectively. The mean sensitivities of MRI and CT were 90 and 94%, respectively. The differences were not statistically significant. The mean specificity of MRI (99%) was significantly higher than that of combined CTAP and CTHA (92%). CONCLUSION:Combined T2-weighted and dynamic gadolinium-enhanced MRI is as accurate as combined CTAP and CTHA for preoperative detection of HCCs.
journal_name
J Comput Assist Tomogrjournal_title
Journal of computer assisted tomographyauthors
Choi D,Kim SH,Lim JH,Cho JM,Lee WJ,Lee SJ,Lim HKdoi
10.1097/00004728-200109000-00018keywords:
subject
Has Abstractpub_date
2001-09-01 00:00:00pages
777-85issue
5eissn
0363-8715issn
1532-3145pii
00004728-200109000-00018journal_volume
25pub_type
临床试验,杂志文章abstract::Fifty-two computed tomography examinations through the region of the pancreas were retrospectively analyzed to determine if marked stomach distension influenced the visualization of the pancreatic tail. Of the 29 patients who had marked stomach distension, 25 (86%) had displacement of small bowel loops away from the v...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198108000-00008
更新日期:1981-08-01 00:00:00
abstract:OBJECTIVE:This study aimed to determine if carotid arterial tortuosity represents a marker of disease severity in Loeys-Dietz syndrome (LDS). METHODS:Fifty-four 54 LDS patients (mean age, 17.0 years) who underwent computed tomogram angiography from January 2004 to December 2013 were retrospectively identified. Carotid...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000764
更新日期:2018-09-01 00:00:00
abstract:OBJECTIVE:This study is motivated by the possibility of using computed tomography (CT) to detect early coronary atherosclerosis by the increased CT values within the arterial wall resulting from vasa vasorum proliferation. METHODS:Coronary arteries (n = 5) with early atherosclerotic changes were injected with Microfil...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181bb0d32
更新日期:2010-03-01 00:00:00
abstract::We report a case of early phase Takayasu arteritis that predominantly involved the pulmonary arteries and had, along with expected radiographic findings, the unusual pattern of diffuse pulmonary parenchymal lesions on CT. We suggest that this finding may be an additional feature in early phase Takayasu arteritis and n...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章,评审
doi:10.1097/00004728-199809000-00025
更新日期:1998-09-01 00:00:00
abstract::We report eight patients studied by computed tomography (CT) and arteriography and one patient studied by CT only and compare the value of both methods in the preoperative localization of pheochromocytoma. Single adrenal tumors were found in six adults (four were right sided and two were left sided). A 15-year-old chi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198012000-00021
更新日期:1980-12-01 00:00:00
abstract:PURPOSE:To evaluate the usefulness of CT in the differentiation of ruptured endometrial cysts and corpus luteal cysts. METHODS:Sixteen patients (mean age, 26 years) with a surgically proven ruptured endometrial cyst and 19 patients (mean age, 28 years) with a surgically proven corpus luteal cyst were included in this ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e31821f4bd2
更新日期:2011-07-01 00:00:00
abstract:BACKGROUND:The Mount Fuji sign (MFS) is a radiological sign on computed tomographic scans depicting air between the frontal lobes. Air in this location indicates tension pneumocephalus (TP), considered a neurosurgical emergency.We evaluate the correlation between the MFS and perioperative mortality attributed to TP in ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000897
更新日期:2019-09-01 00:00:00
abstract:PURPOSE:The purpose of this study was to assess the accuracy of magnetic resonance imaging (MRI), particularly, dynamic MRI, in distinguishing ovarian fibromas from subserous uterine leiomyomas. MATERIAL AND METHODS:Fifteen ovarian fibromas and 15 subserous uterine leiomyomas were retrospectively reviewed. All MR exam...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000237810.88251.9e
更新日期:2007-03-01 00:00:00
abstract:PURPOSE:The graphical approach is widely used for the pixelwise determination of local metabolic rate of glucose from dynamic positron emission tomography (PET) data. In its conventional implementation, measured integrals over time frames are used to approximate instantaneous tracer concentrations at midframe times ("m...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200307000-00026
更新日期:2003-07-01 00:00:00
abstract:OBJECTIVE:This study was done to determine the feasibility and potential utility of whole-body PET using the glucose analogue 2-[18F]fluoro-2-deoxy-D-glucose (FDG) for the detection of primary malignancies and metastatic lesions. MATERIALS AND METHODS:This was a prospective, nonrandomized study of whole-body FDG-PET i...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199307000-00012
更新日期:1993-07-01 00:00:00
abstract::The case of a 75-year-old man with a history of lymphoma, recent upper respiratory tract infection, and a protracted course of encephalopathy is presented. Radiologically, findings were consistent with posterior reversible encephalopathy syndrome. A brain biopsy revealed evidence of endothelial activation, T-cell traf...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181f31917
更新日期:2011-01-01 00:00:00
abstract::The computed tomography (CT) and ultrasound findings in 18 patients (35 kidneys) with non-Hodgkin lymphoma involving the kidneys are presented. Renal involvement was bilateral in 13 patients. The most common presentation was that of multiple intraparenchymal nodules (15 kidneys). Other types of involvement included di...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198304000-00007
更新日期:1983-04-01 00:00:00
abstract:OBJECTIVE:To investigate the magnetic resonance imaging (MRI) features of well-differentiated hepatocellular carcinoma (HCC). METHODS:We reviewed the MRI of 32 patients with 33 pathologically confirmed well-differentiated HCC. The MRI protocol included T2-weighted imaging with and without fat saturation, dual-phase T1...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200607000-00008
更新日期:2006-07-01 00:00:00
abstract:PURPOSE:To investigate the optimal dual-energy reconstruction technique for the visualization of the hepatic arterial system during dual-energy multidetector computed tomographic (MDCT) angiography of the liver. MATERIALS AND METHODS:Twenty-nine nonconsecutive patients underwent dual-energy MDCT angiography of the liv...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000259
更新日期:2015-09-01 00:00:00
abstract::Collagen vascular disease (CVD) can cause a variety of lung abnormalities, including usual interstitial pneumonia, nonspecific interstitial pneumonia, organizing pneumonia, diffuse alveolar damage, lymphoid interstitial pneumonia, bronchiectasis, constrictive bronchiolitis, follicular bronchiolitis, alveolar hemorrhag...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200405000-00009
更新日期:2004-05-01 00:00:00
abstract::Pelvic varices in women consist of tortuous and dilated parauterine and ovarian veins and have a characteristic appearance at CT and MRI. Imaging is critical in the evaluation of pelvic varices, both to prevent confusion with other conditions and because pelvic varices may be secondary to serious underlying pathology....
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199905000-00018
更新日期:1999-05-01 00:00:00
abstract::Abdominal CT, which routinely includes the lower thorax, is an important adjunct to supine chest radiography in detecting chest injury in patients with blunt abdominal trauma. In 1,086 consecutive patients with blunt abdominal trauma, 223 of whom had both supine chest radiography and abdominal CT, 49 patients examined...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199301000-00009
更新日期:1993-01-01 00:00:00
abstract:OBJECTIVE:To verify the earliest detectability of liver metastases in patients who underwent serial multidetector computed tomography (MDCT) examinations. METHODS:We selected 12 patients with known primary cancer who underwent 4 or more contrast-enhanced, 4-detector MDCTs. When metastases had been reported, an evaluat...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200605000-00006
更新日期:2006-05-01 00:00:00
abstract::Idiopathic retroperitoneal fibrosis (IRF) is a rare condition of unknown etiology. An unusual case of IRF exclusively located at the peripancreatic area without extension below the lower renal poles is reported. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198611000-00038
更新日期:1986-11-01 00:00:00
abstract::We report a rare case of prolactinoma with deposition of amyloid and calcifications. Magnetic resonance imaging and/or computed tomography findings have been described in only a few cases. Possible mechanisms of amyloid deposition and calcification were discussed, and literatures were reviewed. In pituitary adenomas, ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e31820d7bdf
更新日期:2011-03-01 00:00:00
abstract::Volume rendering is a visualization technique that has important applications in diagnostic radiology and radiotherapy. A methodology is presented for (a) evaluation of the quantitative accuracy of representation of known objects in volume-rendered scenes and for (b) optimization of the opacity transfer function to ac...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199805000-00020
更新日期:1998-05-01 00:00:00
abstract:PURPOSE:Our goal was to find a causal relation between disk degeneration in nonfused lumbar segments, back pain, and the angle of scoliotic curves 21-30 years after dorsal spondylodesis. METHOD:Thirty-two patients with scoliosis had been treated by dorsal spondylodesis 21-30 years prior to this study (mean 25.2 +/- 2....
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199607000-00015
更新日期:1996-07-01 00:00:00
abstract:OBJECTIVE:Magnetic resonance imaging has proven to be a useful diagnostic tool for the evaluation of various types of vascular rings and congenital heart disease. We report two cases showing the accuracy of MRI in detecting post-surgical complications in patients with these conditions. MATERIALS AND METHODS:The two ca...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199401000-00008
更新日期:1994-01-01 00:00:00
abstract::Pneumatosis cystoides coli (PCC) is an uncommon condition in which multiple gas-filled cysts in the walls of the colon. Patients with PCC initially complain of various symptoms including abdominal discomfort, constipation, diarrhea, hematochezia, vomiting, and fever. We recently diagnosed PCC by computed tomography (C...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/rct.0b013e31805d08ca
更新日期:2008-01-01 00:00:00
abstract::The use of magnetic resonance (MR) to preoperatively evaluate patients with primary hyperparathyroidism was assessed using a 1.5 T system and surface coil reception. Twenty-five patients with primary hyperparathyroidism were studied before surgical exploration. Axial images, 5 mm thick, were obtained from the thyroid ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198709000-00023
更新日期:1987-09-01 00:00:00
abstract::Recently, the application of intravenous gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) has been shown to improve the detection of intradural extramedullary spinal disease in adults. The ability of Gd-DTPA enhanced magnetic resonance (MR) to detect intradural extramedullary spinal metastases was studied in p...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199009000-00009
更新日期:1990-09-01 00:00:00
abstract::The utility of gadolinium-enhanced ultrafast MR imaging in the diagnosis of focal nodular hyperplasia (FNH) of the liver was assessed in one patient. Contrast-enhanced serial snapshot-FLASH with a frequency of 30 images/min demonstrated the typical hemodynamic appearance of FNH known from CT studies. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:
更新日期:1991-09-01 00:00:00
abstract::A new 6 mm collimator for the EMI CT5000/5005 scanner is described. It consists of a narrower tube side and detector side collimator that can be set up in less than 5 min. The applications are primarily for the orbit and parasellar area. Future applications with the aid of new software include coronal reconstruction. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-197807000-00029
更新日期:1978-07-01 00:00:00
abstract::Endovascular stent grafting of abdominal aortic aneurysms is a new technique that may replace open surgery in selected cases. Pre-and postoperative angiography can be replaced by helical CT. This pictorial essay describes and illustrates the use of multislice helical CT where maximum intensity projection and multiplan...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200107000-00013
更新日期:2001-07-01 00:00:00
abstract:PURPOSE:The purpose of this study was to correlate thin-slice high-resolution helical CT findings of arterial and venous involvement in pancreatic cancers with surgical and histopathologic results. METHOD:Forty-eight patients with pancreatic cancer underwent preoperative thin-slice high-resolution helical CT, followed...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200105000-00002
更新日期:2001-05-01 00:00:00