Experimental comparison of radiographic techniques in the detection of maxillary sinus disease.

Abstract

The radiographic examination of the maxillary sinus is usually accomplished by the Waters' projection. However, some lesions, such as the mucous retention cyst, postoperative maxillary cyst and maxillary sinus carcinoma, as well as some lesions extending into the maxillary sinus, may be shown by panoramic radiography. The present study was conducted to confirm the ability of panoramic radiography in the detection of maxillary sinus disease. The representation of a globular radiopaque mass at different locations in the maxillary sinus of a dry skull was compared in Waters' and panoramic projections. A mass with a diameter of 10 mm situated on the posterior wall or floor of the maxillary sinus was shown better by panoramic radiography. The Waters' projection was less effective; the mass, especially on the floor of the sinus, was not clearly demonstrated due to superimposition of the maxillary molar teeth.

Utilization of computer-aided detection system in diagnosing unilateral maxillary sinusitis on panoramic radiographs

“…E-mail: yoshiko@dpc.agu.ac.jp presence of a globular radio-opaque mass on the posterior wall or floor. 9 However, there are some limitations to the detection of defects in the posterior wall 10 arising from artefacts or superimposition caused by the hard palate and inferior turbinate. 11 Therefore, diagnosis of diseases affecting the maxillary sinus is often difficult, especially for inexperienced observers.…”

Comparison of CBCT and Panoramic Radiography for the Evaluation of Opacification in the Maxillary Sinuses

“…7,8 In studies involving the MS, these images are frequently used to define the gold standard. 9 However, according to the studies by Pinsky et al 10 The underlined values represent the accordance observed. Ogawa 12 (1975) found that imaging artifacts from the contralateral mandibular ramus in the maxillary sinus also make the detection of sinus changes more difficult.…”

The effect of radiographic imaging modalities and the observer's experience on postoperative maxillary cyst assessment

“…However, in a panoramic radiograph, the central ray is approximately parallel to the medial and posterior wall and the other walls are superimposed 15,16. Ohba et al17 reported that the panoramic radiograph was less effective for a lesion on the anterior and medial walls. Heo et al18 found that observers failed to detect lesions limited to the sinus, for example, those on the floor of the maxillary sinus without any apparent bony expansion or those only on the anterior wall when bony expansion was seen.…”