Quantitative 99mTc-DTPA scintigraphy for determination of maxillary sinus drainage following Caldwell-Luc surgery
- 1. Hacettepe Univ., Ankara (Turkey). Dept. of Nuclear Medicine
- 2. Hacettepe Univ., Ankara (Turkey). Dept. of Otorhinolaryngology
Description
Nine maxillary sinuses of 8 patients who had undergone Caldwell-Luc surgery (CWL) were injected with 100-125 μC 99mTc-DTPA in 0.2 ml from the gingivo-buccal sulcus, passing through the canine fossa window. Sinus half-emptying times and percent contribution of the natural ostium (NO) and the naso-antral window (NA) to the clearance from the sinus were calculated, using time-activity curves as well as the activity of cotton wool plugs placed into the middle and lower conchae. Mean half-emptying times in patients in whom the mucosa had been removed were shorter than those in patients in whom it had been left in place. In the former group percent drainage through the NO was higher than that through the NA whereas in the latter group the opposite was the case. These findings are consistent with the thesis that if the mucosa is retained, the ciliae continue their sweeping action towards the NO but if it is removed the NA gains importance in the drainage. This method is promising for the evaluation of maxillary sinus drainage following CWL. (orig.)
Abstract (German)
Bei 8 Patienten mit chronischer Oberkieferhoehlenentzuendung, die nach Caldwell-Luc (CWL) operiert worden waren, wurden 100-125 μCi 99mTc-DTPA in 0,2 ml vom gingiovobukkalen Sulcus aus in den Sinus injiziert. Danach wurden die Entleerungs-Halbzeiten aus dem Sinus und die prozentualen Anteile des natuerlichen Ostiums (NO) und des nasoantralen Fensters (NA) an der Clearance berechnet, wobei sowohl die Zeit/Aktivitaet-Kurven als auch die Aktivitaet von Tupfern herangezogen wurden, die in die mittlere bzw. untere Concha gelegt worden waren. Bei Patienten, bei denen die Mukosa entfernt worden war, waren die durchschnittlichen Entleerungszeiten kuerzer als bei Patienten, bei denen sie belassen worden war. Bei der ersteren Gruppe war der Drainage-Anteil durch das NO hoeher als jener durch das NA, waehrend bei der letzteren Gruppe das Gegenteil der Fall war. Diese Beobachtungen stuetzen die These, wonach die Belassung der Schleimhaut den Zilien ihre Transportfaehigkeit in Richtung NO erhaelt, waehrend nach ihrer Entfernung das NA an Bedeutung fuer die Drainage gewinnt. Die Methode scheint fuer die Bewertung der Drainage des Sinus maxillaris nach CWL vielversprechend zu sein. (orig.)Additional details
Publishing Information
- Journal Title
- Nuklearmedizin
- Journal Volume
- 30
- Journal Issue
- 5
- Series
- Nuklearmedizin.
- Journal Page Range
- 178-182
- ISSN
- 0029-5566
- CODEN
- NUKLD
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 23019271
- Subject category
- S62: RADIOLOGY AND NUCLEAR MEDICINE;
- Descriptors DEI
- CLEARANCE; DIAGNOSIS; DTPA; FEASIBILITY STUDIES; IMAGES; INFLAMMATION; INJECTION; ISOMERIC NUCLEI; PATIENTS; RADIOPHARMACEUTICALS; SCINTISCANNING; SINUSES; SURGERY; TECHNETIUM COMPLEXES; TECHNETIUM 99
- Descriptors DEC
- AMINO ACIDS; ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBOXYLIC ACIDS; CAVITIES; CHELATING AGENTS; COMPLEXES; COUNTING TECHNIQUES; DIAGNOSTIC TECHNIQUES; DISEASES; DRUGS; HOURS LIVING RADIOISOTOPES; INTAKE; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LABELLED COMPOUNDS; MAMMALS; MAN; MATERIALS; MEDICINE; NUCLEI; ODD-EVEN NUCLEI; ORGANIC ACIDS; ORGANIC COMPOUNDS; PATHOLOGICAL CHANGES; PRIMATES; RADIOACTIVE MATERIALS; RADIOISOTOPE SCANNING; RADIOISOTOPES; RADIOPROTECTIVE SUBSTANCES; RESPONSE MODIFYING FACTORS; TECHNETIUM ISOTOPES; TRANSITION ELEMENT COMPLEXES; VERTEBRATES; YEARS LIVING RADIOISOTOPES