Computed tomography dacryocystography

Saraç, Kaya; Hepşen, İbrahim F.; Bayramlar, Hüseyin; Uguralp, M.; Toksöz, Mehmet; Baysal, Tamer

doi:10.1016/0720-048x(94)00385-p

Cited by 13 publications

(12 citation statements)

References 3 publications

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“…7,12 Although MRI is considered to be the technique of choice for evaluating periorbital soft tissues, CT-DCG depicts surrounding soft tissues reliably despite the limited contrast resolution. 11,12,15,17 In most patients, MRI adds no additional information to the CT-DCG. 16 In addition to the concerns regarding the use of ionizing radiation, CT requires the use of contrast medium to outline adequately the nasolacrimal duct.…”

Section: Discussionmentioning

confidence: 99%

“…12 The use of CT (both with and without DCG) provides better spatial resolution of the soft tissue and bony structures allowing for more accurate localization of soft tissues masses in relation to the nasolacrimal apparatus relative to conventional DCG. 12,13,[15][16][17] The use of threedimensional reconstruction of CT images also permits the detection of mass effect that may not be evident on routine and oblique DCG radiographs. 13 When evaluating masses located at the medial canthus of the eye with CT scanning, the questions that should be considered are: (1) is the center of mass in the region of the lacrimal sac or nasolacrimal duct?…”

Section: Discussionmentioning

confidence: 99%

“…1 Computed tomography (CT) and magnetic resonance dacryocystography (DCG) are commonly used in people for the evaluation of chronic epiphora, masses of the nasolacrimal duct, and facial trauma. [6][7][8][9][10][11][12][13][14][15][16][17][18] The nasolacrimal apparatus provides tear drainage and is comprised of the dorsal and ventral lacrimal canaliculi, lacrimal sac, and the nasolacrimal duct. The nasolacrimal duct originates at the lacrimal sac and passes rostrally in the nasolacrimal canal.…”

Section: Introductionmentioning

confidence: 99%

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Computed tomography dacryocystography evaluation of the nasolacrimal apparatus

Nykamp

Scrivani

Pease

2004

Vet Radiology Ultrasound

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Computed tomography-dacryocystography (CT-DCG) was used to evaluate the nasolacrimal system in four patients (three dogs and one horse) that were admitted for evaluation of chronic epiphora, facial swelling, or facial trauma. The four patients are reviewed and the technique for performing CT-DCG is described. Additionally, the indications for this procedure are discussed. CT-DCG is advantageous because cross-sectional imaging provides superior resolution of the nasolacrimal apparatus and the relatively long, small-diameter, bony nasolacrimal canal in most veterinary patients.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computed tomography dacryocystography evaluation of the nasolacrimal apparatus

Nykamp

Scrivani

Pease

2004

Vet Radiology Ultrasound

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“…14 These methods are, however, expensive, time consuming, and not widely available. Based on this study, for patients with a clinical diagnosis of FNLDO, we recommend performing oil based contrast macrodacryocystography with a delayed erect film—being reasonably cheap and readily available—and then proceed to lacrimal drainage scintigraphy if contrast radiography is non-contributory.…”

Section: Discussionmentioning

confidence: 99%

Comparison of dacryocystography and lacrimal scintigraphy in the diagnosis of functional nasolacrimal duct obstruction

Wearne

Pitts

Frank

et al. 1999

British Journal of Ophthalmology

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Aim-It appears from the literature that no standardised examination exists for patients with functional nasolacrimal duct obstruction. The role of dacryocystography and lacrimal scintigraphy was compared in the diagnosis and management of these patients. Method-Patients who were clinically diagnosed as having unilateral or bilateral functional nasolacrimal duct obstruction were prospectively entered into the study and data collected over 12 months in Moorfields Eye Hospital and Whipps Cross Hospital, London. All cases had, on separate occasions, a standardised dacryocystogram with delayed erect films and a lacrimal drainage scintigram. Results-45 lacrimal systems of 32 patients (mean age 62 years; 59% male) fulfilled the inclusion criteria. Abnormalities were detected with dacryocystography in 93% of systems and with lacrimal drainage scintigraphy in 95% of systems. Based on the results of previous quantitative studies, the positive scintigrams were subdivided into those demonstrating prelacrimal sac delay (13%), delay at the lacrimal sac/duct junction (35%), or delay within the duct (47%). Combining the two imaging techniques increased the sensitivity to 98%. Conclusions-Both investigations are very sensitive at detecting abnormalities in patients with a clinical diagnosis of functional nasolacrimal duct obstruction. Lacrimal drainage scintigraphy is a slightly more sensitive test, but missed an abnormality detected by dacryocystography in two (4%) systems. A combination of the two techniques gives the highest sensitivity with maximum anatomical and physiological information but, in clinical practice, it is reasonable to perform a dacryocystogram initially and proceed to scintigraphy only if contrast radiography is normal. (Br J Ophthalmol 1999;83:1032-1035

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“…The comparison with the previous methods demonstrates that CT dacryocystography is a very expensive method, demanding a high radiation dose, although is extremely useful in the diagnosis of lacrimal pathways obstruction associated with intranasal diseases, facial fractures and maxillofacial tumors (14,15) .…”

Section: Computed Tomography Dacryocystographymentioning

confidence: 99%

Avaliação da via lacrimal pelos métodos radiológicos

et al. 2007

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The authors perform a revisional and iconographic study of the lacrimal system by means of radiological methods, namely, conventional radiography, linear tomography, computed tomography and magnetic resonance imaging. Image methods are essential to define diagnosis and therapy, considering that besides demonstrating alterations of the lacrimal system, they may indicate the patients with better prognosis associated with the surgical approach. Considering the lower cost, lower radiation dose, low rate of complications, and level of information that can be obtained dacryocystography by means of linear tomography is recommended as the initial investigation method. Keywords: Dacryocystography; Lacrimal system; Obstruction of the lacrimal system. Avaliação da via lacrimal pelos métodos radiológicos.Os autores realizam um estudo revisional e iconográfico das vias lacrimais através dos métodos radiológi-cos, sendo eles a radiografia convencional, a tomografia linear, a tomografia computadorizada e a ressonân-cia magnética. Os métodos de imagem são fundamentais para definir diagnóstico e terapia, pois, além de demonstrarem as alterações das vias lacrimais, sugerem quais os pacientes que terão melhor prognóstico com a abordagem cirúrgica. Pelo seu custo mais baixo, menor dose de radiação, baixo índice de complicações e pela informação que pode ser obtida, recomenda-se que a dacriocistografia por tomografia linear seja o método inicial de investigação. Unitermos: Dacriocistografia; Via lacrimal; Obstrução da via lacrimal. AbstractResumo

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Computed tomography dacryocystography

Cited by 13 publications

References 3 publications

Computed tomography dacryocystography evaluation of the nasolacrimal apparatus

Computed tomography dacryocystography evaluation of the nasolacrimal apparatus

Comparison of dacryocystography and lacrimal scintigraphy in the diagnosis of functional nasolacrimal duct obstruction

Avaliação da via lacrimal pelos métodos radiológicos

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