Abstract:
:Purpose To determine if the change in tumor apparent diffusion coefficient (ADC) at diffusion-weighted (DW) MRI is predictive of pathologic complete response (pCR) to neoadjuvant chemotherapy for breast cancer. Materials and Methods In this prospective multicenter study, 272 consecutive women with breast cancer were enrolled at 10 institutions (from August 2012 to January 2015) and were randomized to treatment with 12 weekly doses of paclitaxel (with or without an experimental agent), followed by 12 weeks of treatment with four cycles of anthracycline. Each woman underwent breast DW MRI before treatment, at early treatment (3 weeks), at midtreatment (12 weeks), and after treatment. Percentage change in tumor ADC from that before treatment (ΔADC) was measured at each time point. Performance for predicting pCR was assessed by using the area under the receiver operating characteristic curve (AUC) for the overall cohort and according to tumor hormone receptor (HR)/human epidermal growth factor receptor 2 (HER2) disease subtype. Results The final analysis included 242 patients with evaluable serial imaging data, with a mean age of 48 years ± 10 (standard deviation); 99 patients had HR-positive (hereafter, HR+)/HER2-negative (hereafter, HER2-) disease, 77 patients had HR-/HER2- disease, 42 patients had HR+/HER2+ disease, and 24 patients had HR-/HER2+ disease. Eighty (33%) of 242 patients experienced pCR. Overall, ΔADC was moderately predictive of pCR at midtreatment/12 weeks (AUC = 0.60; 95% confidence interval [CI]: 0.52, 0.68; P = .017) and after treatment (AUC = 0.61; 95% CI: 0.52, 0.69; P = .013). Across the four disease subtypes, midtreatment ΔADC was predictive only for HR+/HER2- tumors (AUC = 0.76; 95% CI: 0.62, 0.89; P < .001). In a test subset, a model combining tumor subtype and midtreatment ΔADC improved predictive performance (AUC = 0.72; 95% CI: 0.61, 0.83) over ΔADC alone (AUC = 0.57; 95% CI: 0.44, 0.70; P = .032.). Conclusion After 12 weeks of therapy, change in breast tumor apparent diffusion coefficient at MRI predicts complete pathologic response to neoadjuvant chemotherapy. © RSNA, 2018 Online supplemental material is available for this article.
journal_name
Radiologyjournal_title
Radiologyauthors
Partridge SC,Zhang Z,Newitt DC,Gibbs JE,Chenevert TL,Rosen MA,Bolan PJ,Marques HS,Romanoff J,Cimino L,Joe BN,Umphrey HR,Ojeda-Fournier H,Dogan B,Oh K,Abe H,Drukteinis JS,Esserman LJ,Hylton NM,ACRIN 6698 Trial Team adoi
10.1148/radiol.2018180273subject
Has Abstractpub_date
2018-12-01 00:00:00pages
618-627issue
3eissn
0033-8419issn
1527-1315journal_volume
289pub_type
杂志文章,多中心研究,随机对照试验相关文献
RADIOLOGY文献大全abstract::Corticosteroids and local anesthetics are some of the most commonly administered medications in radiology departments. These medications have marked variability in their formulations, which may increase their adverse event profile for specific procedures. In particular, certain corticosteroid preparations are associat...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiol.2523081929
更新日期:2009-09-01 00:00:00
abstract::A computer based verification system which monitors the operation of a 4-MV linear accelerator is described. Fourteen parameters can be checked for proper alignment prior to irradiation. A training simulator was also built to minimize interference with treatment schedules and to provide technicians with experience in ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/131.1.258
更新日期:1979-04-01 00:00:00
abstract::Lumbar spinal fusion is a commonly performed procedure, and, despite changes in cage types and fixation hardware, radiologists have, over the years, become familiar with the imaging features of typical spinal fusion and many of the complications seen in patients after surgery, including pseudoarthrosis, hardware loose...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiol.11101104
更新日期:2011-08-01 00:00:00
abstract::In order to determine the relative biological effectiveness (RBE) of various low- and high-LET radiotherapy beams of low coses, LAF1 mice were exposed to one dose and 10 equally fractionated doses of 60Co gamma rays, 137Cs gamma rays, 4-MeV x rays, 300-kVp x rays, helium ions in the plateau and Bragg-peak region, and ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/132.1.205
更新日期:1979-07-01 00:00:00
abstract::Hirschprung disease is usually diagnosed in infancy. Occasionally patients reach adulthood without diagnosis or treatment. Four cases of adult Hirschprung disease are described. The principal radiographic findings are a markedly dilated, feces-filled colon above the zone of transition; a narrowed rectum; a cone- or fu...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.160.3.3737900
更新日期:1986-09-01 00:00:00
abstract::The authors investigated the spectrum of radiologic findings in a large series (n = 47) of patients seropositive to human immunodeficiency virus (HIV) 1 and with pathologically proved progressive multifocal leukoencephalopathy, to determine the characteristic imaging pattern of the disease. Thirty-six computed tomogra...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.187.1.8451420
更新日期:1993-04-01 00:00:00
abstract::In men who otherwise seem to have responded to chemotherapy for nonseminomatous germ cell tumors (NSGCTs), enlarging masses can represent benign tissue rather than residual or recurrent malignancy. One hundred eighty-five men with negative serum tumor markers after first-line chemotherapy for NSGCT underwent surgical ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.175.2.2158120
更新日期:1990-05-01 00:00:00
abstract:PURPOSE:To determine whether liver tumor detection is increased by acquiring multiple dynamic arterial phase and portal venous phase magnetic resonance (MR) images. MATERIALS AND METHODS:Dynamic MR imaging was performed in 205 patients at 1.5 T with use of a fast spoiled gradient-echo technique (repetition time, 9-12 ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.201.2.8888220
更新日期:1996-11-01 00:00:00
abstract:PURPOSE:To prospectively investigate the ability of a single generator to power multiple small-diameter antennas and create large zones of ablation in an in vivo swine liver model. MATERIALS AND METHODS:Thirteen female domestic swine (mean weight, 70 kg) were used for the study as approved by the animal care and use c...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2441052054
更新日期:2007-07-01 00:00:00
abstract::Images from endoscopic retrograde pancreatography performed in 38 patients with cystic pancreatic neoplasms were reviewed to determine whether they might allow differentiation of malignant from benign lesions. Twenty-three patients had histologically proved benign lesions; 15 had frankly malignant lesions. Images were...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.188.3.8394590
更新日期:1993-09-01 00:00:00
abstract:PURPOSE:To evaluate with sonography the normal development of the fetal cerebellum in the second trimester. MATERIALS AND METHODS:The study included all patients undergoing second trimester genetic amniocentesis who had structurally normal fetuses, in whom the posterior fossa was adequately seen and in whom the karyot...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.193.3.7972820
更新日期:1994-12-01 00:00:00
abstract::A case of achalasia complicated by Mycobacterium fortuitum pulmonary infection and empyema is reported. This association has been documented in the medical literature. Possible mechanisms explaining this association are discussed. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.160.1.3715050
更新日期:1986-07-01 00:00:00
abstract::In the redistribution of cells through the division cycle between dose fractions, the sensitizing effect is greatest when small doses per fraction are used. Since nonproliferating tissues limit the dose in radiotherapy and will not be sensitized by redistribution, the more the dose is fractionated and the lower the do...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/114.1.199
更新日期:1975-01-01 00:00:00
abstract:PURPOSE:To evaluate use of positron emission tomography (PET) versus computed tomography (CT) in detection of pancreatic cancer and determine the value of quantitative and visual image interpretation of these techniques. MATERIALS AND METHODS:Within 8 weeks before surgery, 73 patients with suspected pancreatic cancer ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.195.2.7724750
更新日期:1995-05-01 00:00:00
abstract:PURPOSE:To characterize the effect of low-frequency contrast material-enhanced ultrasound on the vascular endothelium and to determine the parameters and techniques required to deliver a therapeutic agent by using the chorioallantoic membrane (CAM) model. MATERIALS AND METHODS:All in vivo animal procedures were conduc...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2431060167
更新日期:2007-04-01 00:00:00
abstract::Although intravascular foreign bodies are routinely removed with percutaneous extraction, surgical retrieval is performed of most nonvascular foreign bodies. The authors describe six cases in which percutaneous extraction was performed for removal of nonvascular foreign bodies. These foreign bodies included an intraab...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.187.3.8497610
更新日期:1993-06-01 00:00:00
abstract::Injection of fluid through catheters positioned selectively in arteries results in substantial increases in flow and pressure in those arteries for the duration of the injection. This produces certain artifacts which may lead to misinterpretation of the arteriograms. Apparent direction of flow in major vessels, extent...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/127.1.103
更新日期:1978-04-01 00:00:00
abstract::Radiographs of 18 children thought to have carbonic anhydrase II deficiency were reviewed to assess intracranial calcification. These children have an autosomal recessive syndrome consisting of osteopetrosis, renal tubular acidosis, intracranial calcification, and developmental retardation. This calcification is in th...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.157.2.2413500
更新日期:1985-11-01 00:00:00
abstract::The authors describe a coordinate measuring device developed to simplify manual acquisition of the digital information required for computerized three-dimensional treatment planning. This system has been used for two years and shown to be both fast and accurate. The time needed to digitize contour data is reduced to a...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/115.1.187
更新日期:1975-04-01 00:00:00
abstract::A study of 11 patients with "double pylorus" revealed that a second channel between the gastric antrum and the duodenal bulb is the result of ulcer penetration. The fistula can be a sign of spontaneous recovery from ulcerative disease; the fistula occurred in conjunction with clinical improvement in the majority of th...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/126.1.29
更新日期:1978-01-01 00:00:00
abstract:PURPOSE:A prospective study was performed to compare results of computed tomography (CT) and fiberoptic bronchoscopy in diagnosis of cancer in patients with hemoptysis. MATERIALS AND METHODS:Ninety-one patients (64 men, 27 women) with hemoptysis underwent thin-section CT and fiberoptic bronchoscopy. RESULTS:CT scans ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.189.3.8234690
更新日期:1993-12-01 00:00:00
abstract::A case of a postcholecystectomy patient is presented in which an initially grossly dilated common hepatic duct returned to normal size within several minutes. We have tried to explain this phenomenon using known facts abut bile duct elasticity and bile flow, and conclude that such rapid size change probably only occur...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.140.1.7244220
更新日期:1981-07-01 00:00:00
abstract:PURPOSE:To determine the clinical feasibility of a contrast material--enhanced two-dimensional (2D) magnetic resonance (MR) angiographic sequence in lower extremity arteries. MATERIALS AND METHODS:Four healthy volunteers and 12 patients underwent dynamic contrast-enhanced MR angiography; all patients also underwent co...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.196.3.7644630
更新日期:1995-09-01 00:00:00
abstract:PURPOSE:To prospectively determine sensitivity and specificity of breast magnetic resonance (MR) imaging in a screening and symptomatic population by using independent double reading, with histologic or cytologic results or a minimum 18-month follow-up as the standard. MATERIALS AND METHODS:Informed consent and ethica...
journal_title:Radiology
pub_type: 杂志文章,多中心研究
doi:10.1148/radiol.2363040735
更新日期:2005-09-01 00:00:00
abstract:PURPOSE:To evaluate whether exposure to strong static magnetic fields (SMFs), of up to 10 T, affects the growth and cycle distribution of and the micronucleus formation in monolayered Chinese hamster ovary CHO-K1 cells. MATERIALS AND METHODS:The authors developed a system to expose cultured cells to strong SMFs immedi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2243011300
更新日期:2002-09-01 00:00:00
abstract:PURPOSE:To evaluate the diagnostic performance of coronary computed tomographic (CT) angiography for the diagnosis of mitral valve prolapse (MVP). MATERIALS AND METHODS:The retrospective case-controlled multicenter study protocol was approved by the institutional review boards. The U.S. part of the study was HIPAA com...
journal_title:Radiology
pub_type: 杂志文章,多中心研究
doi:10.1148/radiol.2541090393
更新日期:2010-02-01 00:00:00
abstract::Several examples of a peculiar deforming process about the ankle joint resulting in a tibiotalar deformity are reported. When found in black patients, further examination for sickle cell disease should be done. No previous mention of this deformity in connection with sickle cell anemia has been found. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/117.3.551
更新日期:1975-12-01 00:00:00
abstract:PURPOSE:To assess the ability of positron emission tomography (PET) with 2-[fluorine-18]fluoro-2-deoxy-D-glucose (FDG) to allow differentiation of benign from malignant intraosseous lesions. MATERIALS AND METHODS:Twenty patients with strictly intraosseous lesions (five benign and 15 malignant [three primary and 12 met...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.200.1.8657920
更新日期:1996-07-01 00:00:00
abstract::Purpose To assess the utility of established functional markers versus two additional functional markers derived from standard cardiovascular magnetic resonance (MR) images for their incremental diagnostic and prognostic information in patients with nonischemic dilated cardiomyopathy (NIDCM). Materials and Methods App...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016161184
更新日期:2017-06-01 00:00:00
abstract::The authors identified the origin of a high-density artifact with mammography film. An acrylic ramp phantom (thickness, 0-7 cm) was used to create a continuously variable radiation exposure. A perturbation in the curve of optical density versus position along the ramp was observed. Development of the film with the emu...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.206.3.9494510
更新日期:1998-03-01 00:00:00