Several techniques are used to detect chromosomal translocations. Fluorescence in situ hybridization (FISH) is a common method that uses fluorescent probes to identify specific chromosomes or chromosomal regions. Another technique is karyotyping, which involves staining chromosomes and observing them under a microscope to identify structural abnormalities. More advanced methods include next-generation sequencing (NGS), which can provide a high-resolution view of the genome and identify translocations with great precision.