Dynamics of contrast enhancement in delayed computed tomography of brain tumors: tissue-blood ratio and differential diagnosis

Journal Article · Mon Mar 01 04:00:00 EST 1982 · Radiology; (United States)

DOI:https://doi.org/10.1148/radiology.142.3.7063681· OSTI ID:6780234

Takeda, N ^[1]; Tanaka, R; Naki, O; Ueki, K

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1. Niigata Univ., Japan

Thirty-one patients with brain tumors were studied by delayed computed tomographic (CT) scanning performed one and two hours after intravenous administration of contrast medium. Dynamics of contrast enhancement in the lesion were analyzed quantitatively and qualitatively by calculating the tissue-blood ratio (TBR) at each scan, and are expressed as relative TBR (R-TBR). The R-TBRs obtained two hours after the first contrast-enhanced scan were found to be most useful in diagnosis, and were classified into three groups: less than 1.5 (Class I), 1.5 to 3.0 (Class II), and more than 3.0 (Class III). In the glioma group, seven of eight anaplastic gliomas were Class III and all of three anaplastic astrocytomas were Class II. All of seven meningiomas were Class I. Four of five pituitary adenomas were Class II. Three of four neurinomas were Class III. This method is potentially useful in differential diagnosis of some brain tumors.

• OSTI ID: 6780234
• Journal Information: Radiology; (United States), Journal Name: Radiology; (United States) Vol. 142:3; ISSN RADLA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ADENOMAS
ASTROCYTOMAS
BODY
BRAIN
CENTRAL NERVOUS SYSTEM
COMPUTERIZED TOMOGRAPHY
CONTRAST MEDIA
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
GLIOMAS
NEOPLASMS
NERVOUS SYSTEM
ORGANS
PATIENTS
TOMOGRAPHY