Scintigraphic assessment of Barrett's esophagus
Barrett's (B) esophagus is defined by the presence of columnar epithelium above the gastroesophageal junction. Patients with 5cm histologically proven B were evaluated for mucosal labeling (ML), esophageal motility (EM), gastroesophageal reflux (GER), and gastric emptying (GE) of solids and liquids with and without iv metaclopramide (MCP). ML, after premedication with cimetidine, was evaluated 20 and 40 min after injection of Tc-99m04 with ANT and RAO views. Eight of 11 B and 0 of 2 controls (C) labeled esophageal mucosa. EM was assessed in the supine position over one min after a 15 ml swallow Tc-99mSc-H2O. The normal pattern shows sequential, aboral, discreet peaks with no retrograde movement over one min in three computer derived regions over the esophagus. Five of 16 B and 1 of 6 C demonstrated abnormal pattern. GER was assessed in the supine position by serially increasing extrinsic binder pressures from 0 to 100 Torr after ingestion of 300 ml of Tc-99mSc-orange juice (OJ). GER was present in 13 of 15 B and 0 of 11 C. Reflux ranged from 5.1% to 30% at 100 Torr. Hiatal hernia (HH) was identified in 14 of 16 B by endoscopy and in 10 of 16 by scintigraphy. GE was evaluated after a liquid meal of 300 ml Tc-99mSc-OJ and a solid meal of Tc-99mSc-egg salad sandwich. The supine subject was imaged anteriorly for 30 min (liquid) or 60 min (solid). GE was assessed an additional 10 min after MCP. Clearance time (50%) for solid Ge was calculated from extrapolated linear fits of decay corrected data. There was no significant difference in liquid or solid GE between B and C. The authors conclude the following: 1) ML detects B with lower sensitivity than previously reported; 2) EM disorders are frequently found in B; 3) GER is frequently identified in B; 4) HH can be identified by nuclear technique; and 5) B shows normal GE and responds to MCP.
- Research Organization:
- Univ. of Arizona
- OSTI ID:
- 6575068
- Report Number(s):
- CONF-840619-; TRN: 87-018914
- Journal Information:
- J. Nucl. Med.; (United States), Vol. 25:5; Conference: 31. annual meeting of the Society of Nuclear Medicine, Los Angeles, CA, USA, 5 Jun 1984
- Country of Publication:
- United States
- Language:
- English
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59 BASIC BIOLOGICAL SCIENCES
ESOPHAGUS
DYNAMIC FUNCTION STUDIES
RADIONUCLIDE KINETICS
SCINTISCANNING
STOMACH
DATA ANALYSIS
DIGESTION
EPITHELIUM
EVALUATION
FOOD
HISTOLOGY
LABELLING
MONITORING
RADIOPHARMACEUTICALS
TECHNETIUM 99
ANIMAL TISSUES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
DIGESTIVE SYSTEM
DRUGS
GASTROINTESTINAL TRACT
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LABELLED COMPOUNDS
NUCLEI
ODD-EVEN NUCLEI
ORGANS
RADIOISOTOPE SCANNING
RADIOISOTOPES
TECHNETIUM ISOTOPES
TISSUES
YEARS LIVING RADIOISOTOPES
550601* - Medicine- Unsealed Radionuclides in Diagnostics
551001 - Physiological Systems- Tracer Techniques