## 4 Discussion
Forensic Science International ranked first in both the number of publications (\(n=261\)) and number of citations (\(n=5241\)). Indeed, the co-citation analysis map in Figure 4 displays the Forensic Science International in the center, which indicates that the articles in the journal have been cited by most of the other journals. Similar results were obtained from previous bibliometric studies in the fields of legal medicine [6] and forensic anthropology [16], where Forensic Science International was listed as the most influential journal. The keyword analysis revealed four clusters, of which centers (i.e., the keywords with the greatest total link strength of each cluster) were \"Forensic Anthropology\", \"Postmortem ComputedTomography\", \"Autopsy\", and \"Computed Tomography\". This result indicates that CT has been primarily used in two forensic subfields: forensic pathology/medicine and forensic anthropology. Since the development of X-ray CT in 1974, the CT technique has been constantly applied to forensic pathological studies and case reports [9]. The continuous effort to develop advanced techniques at higher resolution has led to a more common application of virtual autopsy (virtopsy) in medical examiners' offices nowadays [17; 18]. This trend not only resulted in a plentiful production of articles to validate the utility of CT compared to traditional autopsy or other types of imaging techniques, e.g., [19; 20; 21], but also expanded the applicability of CT (e.g., estimation of pupae's developmental age [22]; reconstruction of bloodstain in fabric [23]; determination of non-human skeletal remains [24]). Recently, the need to establish new and efficient processing protocols has increased in the field where CT is applied, e.g., [25]. In the field of forensic anthropology, the CT technique has been introduced relatively recently as shown in the keyword analysis (Figure 5); however, the number of forensic anthropological studies using CT has increased rapidly. Particularly, there has been increasing efforts to develop new models for sex and age estimation using CT, e.g., [26; 27; 28], to validate the accuracy of osteometric measurements in the CT scans, e.g., [29; 30], and to automate the analysis processes where CT is involved, e.g., [31; 32]. In addition, Cone Beam CT has been frequently used to measure the thickness of facial soft tissues and contributed to the field of facial reconstruction and personal identification, e.g., [31; 33]. As to the application of VOSviewer for a bibliometric analysis, [PERSON] et al. [6] pointed out two limitations which the current study could also not avoid: a risk of self-citation and a risk of excluding publications written in a non-English language from the analyses. In addition, since the scope of publications analyzed by VOSviewer is determined primarily by the keywords entered during the Document Search process, there is a possibility that a bibliometric study may not include all publications of a targeted field. To avoid this issue, a careful selection of keywords will be required. In this regard, this study used four keywords (\"forensic\", \"legal medicine\", \"medicolegal\", and \"computed tomography\") to include as many related publications as possible. Lastly, some information presented by VOSviewer may slightly differ from what they actually are because VOSviewer analyzes data as the authors of the original publications literally provided. For example, if an author working in a university hospital used the names of the university and the hospital in two different papers as his/her affiliation, there is no way for VOS viewer to notice it. A careful inspection and verification of the information as well as an effort to avoid these limitations will be necessary in the future research.